CN112460747A - Communication control method and device of split air conditioner, storage medium and lower computer - Google Patents
Communication control method and device of split air conditioner, storage medium and lower computer Download PDFInfo
- Publication number
- CN112460747A CN112460747A CN202011301505.3A CN202011301505A CN112460747A CN 112460747 A CN112460747 A CN 112460747A CN 202011301505 A CN202011301505 A CN 202011301505A CN 112460747 A CN112460747 A CN 112460747A
- Authority
- CN
- China
- Prior art keywords
- communication
- computer
- frame
- lower computer
- upper computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a communication control method and device of a split air conditioner, a storage medium and a lower computer, wherein the air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; the method comprises the following steps that an outer machine mainboard, a display panel and at least one inner machine mainboard are connected to a communication bus, the outer machine mainboard serves as an upper computer, the display panel and the at least one inner machine mainboard serve as a lower computer, and after a power-on initialization program of the lower computer, communication receiving of a serial port of the lower computer is started to receive communication frames on the communication bus; if a request frame of the upper computer for the roll name of the lower computer is received, analyzing the function code in the request frame so as to reply a corresponding response frame to the upper computer according to the type of the function code; and if response frames of other lower computers for restoring the roll names of the upper computers are received, analyzing the function codes in the response frames so as to obtain the parameter information of the corresponding lower computers according to the types of the function codes. In the scheme provided by the invention, only one hardware communication interface is needed on the hardware of each controller.
Description
Technical Field
The invention relates to the field of control, in particular to a communication control method and device of a split air conditioner, a storage medium and a lower computer.
Background
The RS-485 communication interface is an external communication bus with a half-duplex working mode, and the half-duplex working mode requires that only one party of two parties in communication is in a communication sending state at any time, and the other party of the two parties in communication receiving state. This makes the bus have master-slave communication structure, that is, there is only one host computer as brain on one RS-485 communication bus, and the communication time sequence is strictly controlled. The Modbus communication protocol is an industrial communication protocol formulated based on RS-485, and the Modbus network belongs to a master-slave network and allows a master computer to communicate with one or more slave computers to complete data interaction. It adopts request/response mode, every request message is correspondent to a response message. The request message is sent by the upper computer, and the lower computer sends a response message to respond after receiving the request message sent to the lower computer.
For example, a split air conditioner for a ship consists of two parts, namely a split outer machine and a split inner machine. The controller generally comprises an outer machine mainboard, an inner machine mainboard and a display panel, is connected by an RS-485 communication interface to form a network, and adopts a Modbus communication protocol for communication regulation. The display panel mainly completes the setting of the mode of the air conditioner, the set temperature, the wind speed and other parameters and displays the parameters of the inner machine and the outer machine. The common split air conditioner adopts two RS-485 communication bus methods. Namely, a bus intermediate and external machine mainboard is used as an upper computer of an internal machine mainboard, and the internal machine mainboard is used as a lower computer. The internal machine mainboard in the other bus is used as an upper computer of the display panel, and the display panel is used as a lower computer. The inner machine mainboard is used as a communication data exchange relay, receives the setting parameters of the display panel of the lower machine and then forwards the setting parameters to the outer machine mainboard of the upper machine. And similarly, the state parameters of the mainboard of the external machine of the upper computer are received and then forwarded to the display panel of the lower computer. The method needs two RS-485 interfaces on the hardware of the internal machine mainboard, and has higher requirement on the hardware. Meanwhile, the inner machine mainboard is used as a communication relay to convert information between the outer machine mainboard and the display panel, so that the communication efficiency is influenced, and the control is complex.
Disclosure of Invention
The main purpose of the present invention is to overcome the above-mentioned drawbacks of the prior art, and to provide a communication control method, device, storage medium and lower computer for a split air conditioner, so as to solve the problem that the split air conditioner in the prior art needs two RS-485 interfaces on the hardware of the main board of the internal machine.
The invention provides a communication control method of a split air conditioner, wherein the air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; the method comprises the following steps that the outer machine mainboard, the display board and the at least one inner machine mainboard are connected to a communication bus, the outer machine mainboard serves as an upper computer, and the display board and the at least one inner machine mainboard serve as a lower computer: after the lower computer is electrified and initialized, starting the communication receiving of the serial port of the lower computer to receive the communication frame on the communication bus; if a request frame of the upper computer for the roll name of the lower computer is received, analyzing the function code in the request frame so as to reply a corresponding response frame to the upper computer according to the type of the function code; and if response frames of other lower computers for restoring the roll names of the upper computers are received, analyzing the function codes in the response frames so as to obtain the parameter information of the corresponding lower computers according to the types of the function codes.
Optionally, receiving a request frame of the upper computer for the roll name of the lower computer includes: analyzing the received communication frame, and if the equipment address in the received communication frame header code is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
Optionally, obtaining parameter information of the corresponding lower computer according to the type of the function code includes: and if the functional code obtained by analysis is of a read data type, analyzing the effective data in the response frame to obtain the parameter information required by the subordinate computer.
Optionally, the method further comprises: after the serial port communication state of the subordinate computer is converted into a communication sending state, a response frame is replied to the superior computer; and/or after the upper computer replies the corresponding response frame, converting the communication state of the serial port of the lower computer into a communication receiving state; and/or if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, abandoning the communication frame and continuing to keep the serial communication receiving.
The invention provides a communication control device of a split air conditioner, which comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; outer quick-witted mainboard, display panel and at least one interior machine mainboard connection are on a communication bus, outer quick-witted mainboard is as the host computer, display panel and at least one interior machine mainboard are as the next machine, the device includes: the receiving unit is used for starting communication receiving of the serial port of the lower computer after the lower computer is electrified and initialized to receive communication frames on the communication bus; the analysis unit is used for analyzing the function codes in the request frame if the receiving unit receives the request frame of the upper computer for the roll names of the lower computers; the reply unit is used for replying a corresponding response frame to the upper computer according to the type of the function code analyzed by the analysis unit; or, the analyzing unit is configured to analyze the function code in the response frame if the receiving unit receives a response frame in which the other lower computer replies the roll name of the upper computer; and the acquisition unit is used for acquiring the parameter information of the corresponding lower computer according to the type of the function code.
Optionally, the receiving unit receives a request frame of the upper computer for the roll name of the lower computer, and the receiving unit includes: analyzing the received communication frame, and if the equipment address in the received communication frame header code is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
Optionally, the obtaining unit obtains parameter information of the corresponding lower computer according to the type of the function code, including: and if the functional code obtained by analysis is of a read data type, analyzing the effective data in the response frame to obtain the parameter information required by the subordinate computer.
Optionally, the method further comprises: the reply unit is used for replying a response frame to the upper computer after converting the serial port communication state of the lower computer into a communication sending state; and/or after the upper computer replies the corresponding response frame, converting the communication state of the serial port of the lower computer into a communication receiving state; and/or the receiving unit is further configured to: if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame is abandoned, and the serial port communication reception is continuously kept.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
In another aspect, the present invention provides a split type air conditioner upper computer, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the processor implements any of the foregoing method steps when executing the program. The upper computer comprises an inner machine main board and/or a display board.
The invention further provides a split air conditioner upper computer which comprises any one of the communication control devices of the split air conditioner. The upper computer comprises an inner machine main board and/or a display board.
According to the technical scheme of the invention, an outer machine mainboard, an inner machine mainboard and a display panel are arranged on the same communication bus, the outer machine mainboard is used as an upper computer of a communication network, and the inner machine mainboard and the display panel are used as a lower computer. The inner machine mainboard and the display panel respectively monitor communication frame data of the other lower computer responding to the upper computer of the outer machine mainboard. Only one hardware communication interface is needed on the hardware of each controller, and interactive parameters between more than two upper computers and lower computers are processed on the same communication bus, so that the communication efficiency is improved, and the communication control is simplified.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a communication network topology of a split type air conditioner according to an embodiment of the present invention;
FIG. 2 shows an RS-485 network topology of a conventional split type air conditioner;
FIG. 3 is a schematic method diagram illustrating an embodiment of a communication control method of a split type air conditioner according to the present invention;
FIG. 4 is a schematic method diagram illustrating a communication control method of a split type air conditioner according to an embodiment of the present invention;
fig. 5 is a block diagram illustrating an embodiment of a communication control apparatus of a split type air conditioner according to the present invention;
FIG. 6a is a diagram illustrating a format of requested frame data;
FIG. 6b is a diagram of a response frame data format;
fig. 6c is a schematic diagram of the format of the device address.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 2 shows an RS-485 network topology structure of an existing ordinary split air conditioner, and two RS-485 communication Bus schemes are adopted, wherein an internal machine motherboard is a lower computer for Bus1, an upper computer for Bus2 is an upper computer, namely an external machine motherboard in a Bus1 Bus is used as an upper computer of the internal machine motherboard, the internal machine motherboard is used as a lower computer, an internal machine motherboard in a Bus2 Bus is used as an upper computer of a display panel, and the display panel is used as a lower computer. The internal machine mainboard serves as a communication data exchange relay, setting parameters of a display panel of the Bus2 lower machine are transferred to an external machine mainboard of the Bus1 upper machine, setting information such as modes and wind speeds of the display panel required by the external machine mainboard is used for controlling load of the external machine, state parameters of the external machine mainboard of the Bus1 upper machine are transferred to a display panel of the Bus2 lower machine, and state information such as temperature sensing bulb temperature values and faults of the external machine required by the display panel is used for displaying. The network mode needs two RS-485 interfaces on the hardware of the internal machine mainboard, and has higher requirement on the hardware. Meanwhile, the inner machine mainboard is used as a communication relay to convert information between the outer machine mainboard and the display panel, so that the communication efficiency is influenced, and the control is complex.
The invention provides a communication control method of a split air conditioner. The air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; the outdoor unit mainboard, the display panel and the at least one indoor unit mainboard are connected to a communication bus, the outdoor unit mainboard serves as an upper computer, and the display panel and the at least one indoor unit mainboard serve as a lower computer. The communication control method of the split air conditioner can be used in a lower computer. The communication bus can be specifically an RS-485 communication bus.
Fig. 1 is a topology of a split type air conditioner communication network according to an embodiment of the present invention. As shown in fig. 1, the RS-485 bus network topology is configured, an inner motherboard (only including an inner motherboard for example), an outer motherboard and a display panel are connected to a communication bus, the outer motherboard serves as an upper computer, the inner motherboard and the display panel serve as a lower computer, that is, the inner motherboard is a lower computer 1, and the display panel is a lower computer 2. By adopting an RS-485 communication bus scheme, each controller (an upper computer and a lower computer in a communication network) in the network only needs one RS-485 hardware interface. The external machine mainboard in the bus is used as an upper computer for network communication and is the only main brain device in the network, and the external machine mainboard controls the communication time sequence and carries out roll calling on each lower computer in the network in sequence. The internal machine mainboard and the display panel are used as lower computers, respond to roll calling of the upper computer, exchange information between the two lower computers through a communication monitoring control method, and avoid influence on communication efficiency due to communication relay conversion data.
Fig. 3 is a schematic method diagram of an embodiment of a communication control method of a split type air conditioner according to the present invention.
As shown in fig. 3, according to an embodiment of the present invention, the communication control method at least includes step S110, step S120, step S130 and step S140.
Step S110, after the lower computer is powered on to initialize the program, the communication reception of the serial port of the lower computer is started to receive the communication frame on the communication bus.
The communication frame may specifically include a request frame and a response frame. The request frame is a communication data frame of a lower computer of the upper computer point name; the response frame is a communication data frame for the lower computer to reply the roll name of the upper computer. The data formats of the request frame and the response frame may be as shown in fig. 6a and fig. 6b, where fig. 6a is the request frame and fig. 6b is the response frame. The RS-485 communication mode is master-slave, and the master (upper computer) needs to roll the names of the slave (lower computer) in sequence to carry out normal communication according to the time sequence. When the subordinate computer is electrified and initialized, the communication receiving of the serial port of the subordinate computer is started, namely, the subordinate computer is in a communication receiving state so as to receive a communication frame on a communication bus, namely, a response frame for waiting the roll name of the upper computer (receiving a request frame of the subordinate computer where the roll name of the upper computer belongs) or monitoring other subordinate computers on the bus to recover the roll name of the upper computer.
And step S120, if a request frame of the upper computer for the roll name of the lower computer is received, analyzing the function code in the request frame so as to send a corresponding response frame to the upper computer according to the type of the function code.
And step S130, if response frames of other lower computers for restoring the roll names of the upper computers are received, analyzing the function codes in the response frames to acquire the parameter information of the corresponding lower computers according to the types of the function codes.
Specifically, when a communication frame on the communication bus is received, the received communication frame is analyzed to determine whether the communication frame is a request frame of the upper computer for the roll name of the lower computer or a response frame of other lower computers for restoring the roll name of the upper computer. Analyzing the received communication frame, and if the equipment address in the communication frame header code obtained by analysis is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
Optionally, since the upper computer and the lower computer are both on the same communication bus, the lower computer can also receive a request frame of the upper computer for roll names of other lower computers, and therefore, in order to distinguish the request frame of the upper computer for roll names of other lower computers from a response frame of other lower computers for returning roll names of the upper computer, the nth bit of the device address in the header of the request frame is set as a first set character to indicate that the data frame is the request frame, and the nth bit of the device address in the header of the response frame is set as a second set character to indicate that the data frame is the response frame, and n can be subjected to protocol regulation as required, so that the lower computer can reject the request frame of the upper computer for roll names of other lower computers and only analyze the response frame of the roll names of other lower computers.
Fig. 6c is a schematic diagram of the format of the device address. For example, the device address is 1 Byte, i.e., 8 bits, in the response frame or the request frame. The highest Bit (7 th Bit, Bit 7) is used for identifying whether the communication data frame is a request frame of an upper computer or a response frame of a lower computer, and the other 7 bits (Bit 0-Bit 6) are the real equipment address of the lower computer with roll calling. Referring to fig. 6c, the highest Bit (Bit 7) of the address is used to identify the data frame type, Bit 7 of the request frame of the upper computer is set to 1, and Bit 7 of the response frame of the lower computer is set to 0. The lower 7 bits (Bit 0-Bit 6) of the address are used for expressing the real address serial number of the lower computer, and the address starts from 0 and ranges from 0 to 127.
For example, if the device address number of the lower computer 1 is 1, the device address of the request frame of the upper computer point name lower computer 1 is 0x81, and after the lower computer 1 receives the data frame, the device address of the first Byte of the data frame is resolved until the highest Bit (Bit 7 Bit) is 1, and the lower computer 1 can recognize the data frame as the request frame. After removing the highest order bits and analyzing the lower 7 order bits (Bit 0 to Bit 6), if the lower order Bit is the device address number of the lower computer 1, namely 0x01, the lower computer 1 is the upper computer point name. If the values are other values, the upper computer roll names other lower computers. The lower computer 1 replies a response frame of the roll call of the upper computer, clears 0 in the highest Bit (Bit 7 Bit) of the equipment address, and sends the local address in the lower 7 Bit, namely the byte of the equipment address is finally sent to 0x 01.
In some embodiments, if the device address in the received request frame is the device address of another lower computer, a response frame that the other lower computer on the communication bus replies the roll name of the upper computer is received. As described above, the request frame of the upper computer for the roll name of the other lower computer and the response frame of the other lower computer for restoring the roll name of the upper computer can be distinguished from each other by the nth bit in the device address, and if the request frame of the upper computer for the roll name of the other lower computer is received, the response frame of the other lower computer for restoring the roll name of the upper computer on the communication bus can be received.
And if a request frame of the upper computer for the roll name of the lower computer is received, analyzing the function code in the request frame so as to send a corresponding response frame to the upper computer according to the type of the function code.
Specifically, the function code is used for identifying the function of the communication frame, if a request frame of the upper computer for the roll name of the lower computer is received, the check code of the request frame is calculated to be correct, the type of the function code in the header code of the request frame is analyzed, and the effective data of the request frame is analyzed and stored according to the Modbus communication protocol requirement. For example, 03 function codes in the Modbus communication protocol, read-only analog quantity, i.e. the host computer, i.e. the "i" needs to read your analog quantity (i.e. some parameter values, such as temperature values).
And after the serial port communication state of the subordinate computer is converted into a communication sending state, replying a response frame to the upper computer and replying the roll call of the upper computer. And after the upper computer replies the corresponding response frame, converting the communication state of the serial port of the lower computer into a communication receiving state.
For example, after serial port communication is converted into sending, response frame communication data is sent according to the Modbus communication protocol format requirement, and the roll call of the upper computer is recovered. After the transmission is finished, the serial port communication is converted into receiving, and a response frame transmitted by the lower computer 2 is monitored.
And if response frames of other lower computers for restoring the roll names of the upper computers are received, analyzing the function codes in the response frames so as to obtain the parameter information of the corresponding lower computers according to the types of the function codes.
Specifically, if the function code obtained by the analysis is of a read data type, the valid data in the response frame is analyzed to obtain parameter information required by the subordinate computer. The function codes are specified according to a standard Modbus protocol, and the commonly used function codes comprise: read-only analog quantity, write analog quantity, read-only switching quantity and write switching quantity. For example, if the function code is of a read data type, it may be determined that the frame is a status frame of the lower computer 2, and includes status parameters or setting parameters of the lower computer 2. And analyzing and storing the effective data of the state frame according to the Modbus communication protocol requirement, and acquiring the parameter information of the lower computer 1 needing the lower computer 2. The effective data is a state value or a set value, for example, for an air conditioning unit, the effective data can be an operation mode, a set temperature value and a windshield wind speed value.
For clearly explaining the technical solution of the present invention, the following describes an execution flow of the communication control method of the split type air conditioner according to a specific embodiment of the present invention.
Fig. 4 is a schematic method diagram of a communication control method of a split type air conditioner according to an embodiment of the present invention. As shown in fig. 4, the split air conditioner includes only one internal machine main board, and the lower computer 1 of the network is taken as an example. After the lower computer 1 is powered on and initialized, the serial port is started to receive, and the upper computer waits for initiating a communication roll call or monitoring a data frame (a response frame sent by another lower computer when the other lower computer replies the roll call of the upper computer) on the bus.
And after receiving the communication frame on the bus, analyzing according to a Modbus communication protocol format, and if the equipment address in the head code of the communication frame obtained by analysis is the local address of the lower computer 1, judging that the frame is the request frame of the upper computer point name lower computer 1. And after the check code of the request frame is calculated to be correct, analyzing the type of the functional code in the head code of the request frame, and analyzing and storing effective data (parameter values with substantial significance, such as temperature values) of the request frame according to the Modbus communication protocol requirement. And the serial port communication is converted into sending, response frame communication data is sent according to the Modbus communication protocol format requirement, and the roll call of the upper computer is recovered. After the transmission is finished, the serial port communication is converted into receiving, and a response frame transmitted by the lower computer 2 is monitored.
If the device address in the header of the communication frame is the address of the lower computer 2, it can be determined that the frame is a response frame replied by the lower computer 2 after the lower computer 2 is the host computer node name. After the check code of the received frame is calculated to be correct, the type of the functional code in the header code of the received frame is analyzed, and if the functional code is of a read data type, the frame can be judged to be a state frame of the lower computer 2 and contain state parameters or setting parameters of the lower computer 2. And analyzing and storing the effective data of the state frame according to the Modbus communication protocol requirement, and acquiring the parameter information of the lower computer 1 needing the lower computer 2. And after the processing is finished, the serial port communication receiving state is continuously kept, and the communication bus is monitored.
In some embodiments, the communication control method further includes: if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame is abandoned, and the serial port communication reception is continuously kept. If the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame can be judged to be the error code and the messy code which are not specified by the Modbus communication protocol, the error code and the messy code are abandoned and not processed, the serial port communication receiving state is continuously kept, and the communication bus is monitored.
The invention provides a communication control device of a split air conditioner. The air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; the outdoor unit mainboard, the display panel and the at least one indoor unit mainboard are connected to a communication bus, the outdoor unit mainboard serves as an upper computer, and the display panel and the at least one indoor unit mainboard serve as a lower computer. The invention provides a communication control device of a split air conditioner, which can be used in a lower computer. The communication bus can be specifically an RS-485 communication bus.
Fig. 1 is a topology of a split type air conditioner communication network according to an embodiment of the present invention. As shown in fig. 1, the RS-485 bus network topology is configured, where an inner motherboard (only one inner motherboard is used as an example), an outer motherboard, and a display panel are connected to a communication bus, the outer motherboard is used as an upper computer, and the inner motherboard and the display panel are used as a lower computer. By adopting an RS-485 communication bus scheme, each controller (an upper computer and a lower computer in a communication network) in the network only needs one RS-485 hardware interface. The external machine mainboard in the bus is used as an upper computer for network communication and is the only main brain device in the network, and the external machine mainboard controls the communication time sequence and carries out roll calling on each lower computer in the network in sequence. The internal machine mainboard and the display panel are used as lower computers, respond to roll calling of the upper computer, exchange information between the two lower computers through a communication monitoring control method, and avoid influence on communication efficiency due to communication relay conversion data.
Fig. 5 is a block diagram of a communication control device of a split type air conditioner according to an embodiment of the present invention. As shown in fig. 5, the communication control apparatus 100 includes a receiving unit 110, an analyzing unit 120, a replying unit 130, and an obtaining unit 140. The communication bus can be specifically an RS-485 communication bus.
The receiving unit 110 is used for starting the communication reception of the serial port of the lower computer after the electrical initialization program is executed on the lower computer, so as to receive the communication frame on the communication bus.
The communication frame may specifically include a request frame and a response frame. The request frame is a communication data frame of a lower computer of the upper computer point name; the response frame is a communication data frame for the lower computer to reply the roll name of the upper computer. The data formats of the request frame and the response frame may be as shown in fig. 6a and fig. 6b, where fig. 6a is the request frame and fig. 6b is the response frame. The RS-485 communication mode is master-slave, and the master (upper computer) needs to roll the names of the slave (lower computer) in sequence to carry out normal communication according to the time sequence. When the subordinate lower computer is electrified and initialized, the communication receiving of the serial port of the lower computer is started, namely, the subordinate lower computer is in a communication receiving state so as to receive a communication frame on a communication bus, namely, a response frame for waiting the roll name of the upper computer (receiving a request frame of the subordinate lower computer where the roll name of the upper computer belongs) or monitoring other slave computers on the bus to recover the roll name of the upper computer is received.
When the receiving unit 110 receives the communication frame on the communication bus, the received communication frame is analyzed to determine whether the communication frame is a request frame of the upper computer for the roll name of the lower computer or a response frame of other lower computers for restoring the roll name of the upper computer. Analyzing the received communication frame, and if the equipment address in the communication frame header code obtained by analysis is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
Optionally, since the upper computer and the lower computer are both on the same communication bus, the lower computer can also receive a request frame of the upper computer for roll names of other lower computers, and therefore, in order to distinguish the request frame of the upper computer for roll names of other lower computers from a response frame of other lower computers for returning roll names of the upper computer, the nth bit of the device address in the header of the request frame is set as a first set character to indicate that the data frame is the request frame, and the nth bit of the device address in the header of the response frame is set as a second set character to indicate that the data frame is the response frame, and n can be subjected to protocol regulation as required, so that the lower computer can reject the request frame of the upper computer for roll names of other lower computers and only analyze the response frame of the roll names of other lower computers.
Fig. 6c is a schematic diagram of the format of the device address. For example, the device address is 1 Byte, i.e., 8 bits, in the response frame or the request frame. The highest Bit (7 th Bit, Bit 7) is used for identifying whether the communication data frame is a request frame of an upper computer or a response frame of a lower computer, and the other 7 bits (Bit 0-Bit 6) are the real equipment address of the lower computer with roll calling. Referring to fig. 6c, the highest Bit (Bit 7) of the address is used to identify the data frame type, Bit 7 of the request frame of the upper computer is set to 1, and Bit 7 of the response frame of the lower computer is set to 0. The lower 7 bits (Bit 0-Bit 6) of the address are used for expressing the real address serial number of the lower computer, and the address starts from 0 and ranges from 0 to 127.
For example, if the device address number of the lower computer 1 is 1, the device address of the request frame of the upper computer point name lower computer 1 is 0x81, and after the lower computer 1 receives the data frame, the device address of the first Byte of the data frame is resolved until the highest Bit (Bit 7 Bit) is 1, and the lower computer 1 can recognize the data frame as the request frame. After removing the highest order bits and analyzing the lower 7 order bits (Bit 0 to Bit 6), if the lower order Bit is the device address number of the lower computer 1, namely 0x01, the lower computer 1 is the upper computer point name. If the values are other values, the upper computer roll names other lower computers. The lower computer 1 replies a response frame of the roll call of the upper computer, clears 0 in the highest Bit (Bit 7 Bit) of the equipment address, and sends the local address in the lower 7 Bit, namely the byte of the equipment address is finally sent to 0x 01.
In some embodiments, if the device address in the request frame received by the receiving unit is a device address of another lower computer, a response frame for other lower computers on the communication bus to reply the roll name of the upper computer is received.
In some embodiments, the parsing unit 120 is configured to parse a function code in a request frame if the receiving unit 110 receives the request frame for the node name of the lower computer to which the upper computer belongs; the reply unit 130 is configured to reply a corresponding response frame to the upper computer according to the type of the function code analyzed by the analysis unit.
Specifically, the function code is used to identify the function of the communication frame, and after calculating that the check code of the request frame is correct if a request frame of the upper computer for the roll name of the lower computer to which the upper computer belongs is received, the parsing unit 120 parses the type of the function code in the header of the request frame, and parses and stores the valid data of the request frame according to the Modbus communication protocol requirement. For example, 03 function codes in the Modbus communication protocol, read-only analog quantity, i.e. the host computer, i.e. the "i" needs to read your analog quantity (i.e. some parameter values, such as temperature values).
The reply unit 130 replies a response frame to the upper computer and replies the roll call of the upper computer after converting the serial port communication state of the subordinate computer into a communication sending state. And after the upper computer replies the corresponding response frame, converting the communication state of the serial port of the lower computer into a communication receiving state.
For example, after serial port communication is converted into sending, response frame communication data is sent according to the Modbus communication protocol format requirement, and the roll call of the upper computer is recovered. After the transmission is finished, the serial port communication is converted into receiving, and a response frame transmitted by the lower computer 2 is monitored.
In some specific embodiments, the parsing unit 120 is configured to parse the function code in the response frame if the receiving unit 110 receives a response frame in which the other lower computer replies the name of the upper computer; the obtaining unit 140 is configured to obtain parameter information of a corresponding lower computer according to the type of the function code.
Specifically, if the analysis unit 120 analyzes that the function code is of a read data type, the obtaining unit 140 analyzes valid data in the response frame to obtain parameter information required by the lower computer. The function codes are specified according to a standard Modbus protocol, and the commonly used function codes comprise: read-only analog quantity, write analog quantity, read-only switching quantity and write switching quantity. For example, if the function code is of a read data type, it may be determined that the frame is a status frame of the lower computer 2, and includes status parameters or setting parameters of the lower computer 2. And analyzing and storing the effective data of the state frame according to the Modbus communication protocol requirement, and acquiring the parameter information of the lower computer 1 needing the lower computer 2. The effective data is a state value or a set value, for example, for an air conditioning unit, the effective data can be an operation mode, a set temperature value and a windshield wind speed value.
The receiving unit 110 is further configured to: if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame is abandoned, and the serial port communication reception is continuously kept.
The present invention also provides a storage medium corresponding to the communication control method of the split type air conditioner, on which a computer program is stored, which when executed by a processor, implements the steps of any of the aforementioned methods.
The invention also provides a split air conditioner upper computer corresponding to the split air conditioner communication control method, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program. The upper computer can specifically comprise an inner machine main board and/or a display board.
The invention also provides a split air conditioner upper computer corresponding to the split air conditioner communication control device, which comprises any one split air conditioner communication control device. The upper computer can specifically comprise an inner machine main board and/or a display board.
According to the scheme provided by the invention, the outer machine mainboard, the inner machine mainboard and the display panel are arranged on the same communication bus, the outer machine mainboard is used as an upper computer of a communication network, and the inner machine mainboard and the display panel are used as a lower computer. The inner machine mainboard and the display panel respectively monitor communication frame data of the other lower computer responding to the upper computer of the outer machine mainboard. Only one RS-485 hardware interface is needed on the hardware of each controller, and interactive parameters between more than two upper computers and lower computers are processed on the same communication bus, so that the communication efficiency is improved, and the communication control is simplified.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The communication control method of the split air conditioner is characterized in that the air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; the method comprises the following steps that the outer machine mainboard, the display board and the at least one inner machine mainboard are connected to a communication bus, the outer machine mainboard serves as an upper computer, and the display board and the at least one inner machine mainboard serve as a lower computer:
after the lower computer is electrified and initialized, starting the communication receiving of the serial port of the lower computer to receive the communication frame on the communication bus;
if a request frame of the upper computer for the roll name of the lower computer is received, analyzing the function code in the request frame so as to reply a corresponding response frame to the upper computer according to the type of the function code;
and if response frames of other lower computers for restoring the roll names of the upper computers are received, analyzing the function codes in the response frames so as to obtain the parameter information of the corresponding lower computers according to the types of the function codes.
2. The method of claim 1, wherein receiving a request frame from an upper computer for a roll name of a lower computer comprises:
analyzing the received communication frame, and if the equipment address in the received communication frame header code is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
3. The method according to claim 1 or 2,
acquiring parameter information of a corresponding lower computer according to the function code type, wherein the parameter information comprises:
and if the functional code obtained by analysis is of a read data type, analyzing the effective data in the response frame to obtain the parameter information required by the subordinate computer.
4. The method of claim 1 or 2, further comprising:
after the serial port communication state of the subordinate computer is converted into a communication sending state, a response frame is replied to the superior computer; and/or the presence of a gas in the gas,
after the upper computer replies the corresponding response frame, the communication state of the serial port of the lower computer is converted into a communication receiving state;
and/or the presence of a gas in the gas,
if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame is abandoned, and the serial port communication reception is continuously kept.
5. The communication control device of the split air conditioner is characterized in that the air conditioner comprises an outer machine mainboard, a display panel and at least one inner machine mainboard; outer quick-witted mainboard, display panel and at least one interior machine mainboard connection are on a communication bus, outer quick-witted mainboard is as the host computer, display panel and at least one interior machine mainboard are as the next machine, the device includes:
the receiving unit is used for starting communication receiving of the serial port of the lower computer after the lower computer is electrified and initialized to receive communication frames on the communication bus;
the analysis unit is used for analyzing the function codes in the request frame if the receiving unit receives the request frame of the upper computer for the roll names of the lower computers; the reply unit is used for replying a corresponding response frame to the upper computer according to the type of the function code analyzed by the analysis unit;
or, the analyzing unit is configured to analyze the function code in the response frame if the receiving unit receives a response frame in which the other lower computer replies the roll name of the upper computer; and the acquisition unit is used for acquiring the parameter information of the corresponding lower computer according to the type of the function code.
6. The apparatus according to claim 5, wherein the receiving unit receives a request frame of the upper computer for the name of the lower computer, and includes:
analyzing the received communication frame, and if the equipment address in the received communication frame header code is the address of the lower computer, determining that the communication frame is the request frame of the lower computer to which the roll name of the upper computer belongs; and if the equipment address in the communication frame header code obtained by analysis is the address of other lower computers, determining the communication frame to be a response frame of other lower computers for restoring the roll names of the upper computers.
7. The method according to claim 5 or 6,
the acquiring unit acquires the parameter information of the corresponding lower computer according to the function code type, and comprises:
and if the functional code obtained by analysis is of a read data type, analyzing the effective data in the response frame to obtain the parameter information required by the subordinate computer.
8. The apparatus of claim 5 or 6, further comprising:
the reply unit is used for replying a response frame to the upper computer after converting the serial port communication state of the lower computer into a communication sending state; and/or the presence of a gas in the gas,
after the upper computer replies the corresponding response frame, the communication state of the serial port of the lower computer is converted into a communication receiving state;
and/or the presence of a gas in the gas,
the receiving unit is further configured to: if the received communication frame is neither the request frame of the upper computer nor the response frame of other lower computers, the communication frame is abandoned, and the serial port communication reception is continuously kept.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. A split-type air conditioner lower computer, comprising a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to implement the steps of the method according to any one of claims 1 to 4, or comprises the communication control device of the split-type air conditioner according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011301505.3A CN112460747B (en) | 2020-11-19 | 2020-11-19 | Communication control method and device of split air conditioner, storage medium and lower computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011301505.3A CN112460747B (en) | 2020-11-19 | 2020-11-19 | Communication control method and device of split air conditioner, storage medium and lower computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112460747A true CN112460747A (en) | 2021-03-09 |
| CN112460747B CN112460747B (en) | 2021-11-23 |
Family
ID=74837164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011301505.3A Active CN112460747B (en) | 2020-11-19 | 2020-11-19 | Communication control method and device of split air conditioner, storage medium and lower computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460747B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606734A (en) * | 2021-08-06 | 2021-11-05 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN116007201A (en) * | 2022-12-14 | 2023-04-25 | 珠海格力电器股份有限公司 | Control method for pairing internal and external machines, water heater and computer readable storage medium |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2276725T3 (en) * | 2000-05-23 | 2007-07-01 | Mitsubishi Denki Kabushiki Kaisha | CONTROL CIRCUIT FOR AN AIR CONDITIONER. |
| CN201307236Y (en) * | 2008-09-09 | 2009-09-09 | 上海轻工业研究所有限公司 | Multi-channel serial communication converter and distributed control system employing same |
| CN103615789A (en) * | 2013-12-13 | 2014-03-05 | 青岛海信日立空调系统有限公司 | Air conditioner centralized control method based on indoor unit marshalling and multi-online-air-conditioner system |
| CN105511325A (en) * | 2015-12-29 | 2016-04-20 | 珠海格力电器股份有限公司 | Data-processing system, method, and device for machine unit |
| CN106152415A (en) * | 2016-08-05 | 2016-11-23 | 珠海格力电器股份有限公司 | The fault determination method of air conditioning system connection wiring and device |
| US20170241659A1 (en) * | 2016-02-18 | 2017-08-24 | Samsung Electronics Co., Ltd. | Method for controlling air conditioner |
| CN108662718A (en) * | 2018-04-13 | 2018-10-16 | 珠海格力电器股份有限公司 | The network-building method and device of air conditioner |
| CN109151763A (en) * | 2018-10-22 | 2019-01-04 | 珠海格力电器股份有限公司 | Wireless data transmission method, radio transmitting device and air-conditioning system |
| CN109489185A (en) * | 2018-11-16 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system, control method and interior machine controller |
| US20190203968A1 (en) * | 2017-12-28 | 2019-07-04 | Lg Electronics Inc. | Air conditioner system |
| CN110398027A (en) * | 2019-08-01 | 2019-11-01 | 格力电器（武汉）有限公司 | Air-conditioning internal machine encryption method and system |
| CN110686368A (en) * | 2019-09-26 | 2020-01-14 | 珠海格力电器股份有限公司 | Communication control device, internal machine, external machine, temperature controller, communication method and air conditioner |
| CN110780909A (en) * | 2019-10-14 | 2020-02-11 | 武汉虹识技术有限公司 | Distributed embedded system upgrading method and device |
-
2020
- 2020-11-19 CN CN202011301505.3A patent/CN112460747B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2276725T3 (en) * | 2000-05-23 | 2007-07-01 | Mitsubishi Denki Kabushiki Kaisha | CONTROL CIRCUIT FOR AN AIR CONDITIONER. |
| CN201307236Y (en) * | 2008-09-09 | 2009-09-09 | 上海轻工业研究所有限公司 | Multi-channel serial communication converter and distributed control system employing same |
| CN103615789A (en) * | 2013-12-13 | 2014-03-05 | 青岛海信日立空调系统有限公司 | Air conditioner centralized control method based on indoor unit marshalling and multi-online-air-conditioner system |
| CN105511325A (en) * | 2015-12-29 | 2016-04-20 | 珠海格力电器股份有限公司 | Data-processing system, method, and device for machine unit |
| US20170241659A1 (en) * | 2016-02-18 | 2017-08-24 | Samsung Electronics Co., Ltd. | Method for controlling air conditioner |
| CN106152415A (en) * | 2016-08-05 | 2016-11-23 | 珠海格力电器股份有限公司 | The fault determination method of air conditioning system connection wiring and device |
| US20190203968A1 (en) * | 2017-12-28 | 2019-07-04 | Lg Electronics Inc. | Air conditioner system |
| CN108662718A (en) * | 2018-04-13 | 2018-10-16 | 珠海格力电器股份有限公司 | The network-building method and device of air conditioner |
| CN109151763A (en) * | 2018-10-22 | 2019-01-04 | 珠海格力电器股份有限公司 | Wireless data transmission method, radio transmitting device and air-conditioning system |
| CN109489185A (en) * | 2018-11-16 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system, control method and interior machine controller |
| CN110398027A (en) * | 2019-08-01 | 2019-11-01 | 格力电器（武汉）有限公司 | Air-conditioning internal machine encryption method and system |
| CN110686368A (en) * | 2019-09-26 | 2020-01-14 | 珠海格力电器股份有限公司 | Communication control device, internal machine, external machine, temperature controller, communication method and air conditioner |
| CN110780909A (en) * | 2019-10-14 | 2020-02-11 | 武汉虹识技术有限公司 | Distributed embedded system upgrading method and device |
Non-Patent Citations (2)
| Title |
|---|
| 刘志鹏等: "空气源热水器恒温控制器数据通信的系统设计", 《西安工程大学学报》 * |
| 桑进军等: "RPM系统中PC机与多下位机通讯的设计与实现", 《仪表技术与传感器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606734A (en) * | 2021-08-06 | 2021-11-05 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN116007201A (en) * | 2022-12-14 | 2023-04-25 | 珠海格力电器股份有限公司 | Control method for pairing internal and external machines, water heater and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112460747B (en) | 2021-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108833237B (en) | Intelligent home gateway and control method thereof | |
| CN112460747B (en) | Communication control method and device of split air conditioner, storage medium and lower computer | |
| US20120257621A1 (en) | Apparatus, method of managing a system, and computer program product | |
| CN113810791B (en) | Method for improving intelligent network card/DPU network telemetering technology performance | |
| US20120259966A1 (en) | Apparatus, management method and computer program product | |
| CN113395198B (en) | Networking method and device of equipment and data transmission system | |
| CN107528747B (en) | Method and device for diagnosing communication state of master station and slave station and computer readable storage medium | |
| CN113301568A (en) | Network distribution method and device and intelligent household equipment | |
| CN106790612A (en) | A kind of dynamic virtual camera mapping method and system | |
| EP2670107B1 (en) | Communication method for wireless terminal and host device, and wireless terminal and host device | |
| CN104993583B (en) | The communication means of power distribution automation equipment | |
| CN115134236A (en) | Intelligent network card management method, device, equipment and readable medium | |
| CN108891227B (en) | Method and system for communication between whole vehicle and air conditioner and control panel | |
| CN113691600A (en) | Synchronization method and device of equipment state information and computer readable storage medium | |
| CN113010122A (en) | Image forming apparatus monitoring apparatus, method, system, and storage medium | |
| CN107769960B (en) | BMC management architecture based on CAN bus | |
| CN113992471B (en) | Communication system and method for multiple hosts and multiple slaves | |
| CN114422288A (en) | Communication system based on Modbus protocol | |
| CN115167351A (en) | Controller function updating method and system, vehicle and server | |
| CN110381178B (en) | NVR module and drawing method thereof and POE-NVR module | |
| CN112491657B (en) | Communication connection method, device and storage medium based on serial port communication | |
| JPH07297884A (en) | Communication management method | |
| CN101997932B (en) | Computer, network card and data exchange method | |
| JP3682838B2 (en) | Monitor and logging device | |
| US20120257540A1 (en) | Method of managing a system, and computer program product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |